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SPECIFICATIONS
The VAC System has been developed with the critical ear as the major arbiter of quality, with both conventional
and unique measurements providing insight and guidance as necessary. The lack of emphasis on measurements
is due to the fact that engineering's arsenal of equipment and techniques do not operate on the pattern
recognition principals that control human perception of sound.
In the immortal words of Daniel von Recklinghausen, if it measures good and sounds bad it is bad. If it
measures bad and sounds good you've measured the wrong things.
For those concerned with test bench performance, the following describes typical measured performance of a
PA80/80 operated at 120 VAC, 60 Hz.
Power Output:
Frequency Response:
Power Bandwidth:
Distortion:
Noise:
Sensitivity:
Negative Feedback:
Absolute Polarity:
Fuse:
Power consumption:
Dimensions:
83 watts continuous average power at 1 kHz into 8 ohms connected to the 8 ohm tap,
both channels driven; 86 watts one channel driven.
down 0.5 dB at 5 Hz and 64 kHz, ref 0 dB = 1 watt @ 1 kHz.
down 3.0 dB at 3 Hz and 115 kHz, ref 0 dB = 1 watt @ 1 kHz.
down 0.5 dB at 12 Hz and 50 kHz, ref 0 dB = 80 watts @ 1 kHz.
down 3.0 dB at 8.5 Hz and 85 kHz, ref 0 dB = 80 watts @ 1 kHz.
< .25% THD at 1 kHz 10 watts
< 1.5 mv at the output, S/N ratio > 84 dB
.775 volts input for full power output
Loop feedback is fixed at approximately 6 dB regardless of output tap selected.
Does not invert signal polarity.
Slo-Blow type, 4A for 100 & 120 Volt configuration, 2A for 220 & 240 V.
300 watts at idle, 516 watts with both channels driven to full power.
18 " width x 15 " depth x 7.5 " height
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